1.  Facility Information :    Plum Creek Manufacturing, Inc.
                              Columbia Falls Operations

2.  Location -      Section 7 and SW1/4 Section 8, Township 30 North, Range 20 West,
                    Flathead County.
                    Columbia Falls Operations
                    P.O. Box 160
                    Columbia Falls, Montana 59912

3.   Distance from U.S./Canada border -      Facility is approximately 85 km from the
                                             U.S./Canada border.

4.  Type and size of Facility -    Facility consists of three plants all located at the same site: the
                                   sawmill, the plywood mill, and the medium density fiberboard
                                   (MDF) plant.

                                   Input capacity of wood-fired Stoker boiler is 292.4 MMBtu/hr.
                                   Three natural gas-fired boilers with design capacities of 20,000,
                                   10,500, and 22,500 lbs/hr of steam.

5.  Source of Emissions -     2 MDF fiber dryers, two plywood veneer dryers, a wood-fired
                              boiler, three gas-fired boilers, various baghouses from the plywood
                              process and the MDF process, many planer, plywood, and MDF
                              cyclones, fugitive dust from mill vehicles and log yard activity.

6.  Type of Fuel -  Wood waste and natural gas.

7.  Type and Quantity of Emissions -

          Emissions increases (and decreases) due to modification:
                    Particulate =  - 156.0 TPY
                    PM-10       =  - 89.8  TPY
                    NOx         =     8.0  TPY
                    VOC         =    94.0  TPY
                    CO          =     9.0  TPY
                    SO2         =     0.05 TPY

     Modification is major for VOC's only, thus only VOC's need to be addressed in the BACT
     analysis.  Area is nonattainment for PM-10.

8.  Emission Control Technology -  No additional controls for the MDF dryers.

9.  Date Permit Application Received -  Not applicable.  State of Montana issued the final
                                        construction permit on April 17, 1995.  Permit
                                        #2667-05.

10.  Stack Height and Diameter -  Not known.

11.  Permit Agency Contact -  Jeff Briggs, Environmental Engineer
                              Montana Department of Health & Environmental Sciences
                              Air Quality Division
                              836 Front Street
                              P.O. Box 200901
                              Helena, Montana  59620-0901

Data entered :      12-12-96